Slip-box.



L. GAIN.

SLIP BOX.

nrmornon FILED 8EIT.6,1907.

899,510, v Patented Sept. 29, 1908.

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LEANDER GAIN, OF RICHMOND, INDIANA.

SLIP-B OK.

Specification of Letters'IPat'ent.

Patented Sept. 29, 1908.

Application-filed September 6, 1907. Serial N 0. 391,590.

To all whom it may concern:

Be it known that I, LEANDER CAIN, a citizen of the United States, residing in Richmond, in the county of Wayne and State of Indiana, have made new and useful Improvements in Slip-Boxes, of which the following is a full, clear, and exact description and specification, being such as will enable others to malke and use the same with absolute exactitu e.

The object of my present invention, broadly speaking, is to provide a slip-box of extremely simple construction, neat and attractive. in appearance, which will be strong and durable in operation, and which can be manufactured and sold at a comparatively low price.

In foundries'it is customary to form sand molds in flasks provided for that purpose, and after the flask has been used for forming the mold it may be removed, but if this is done it is then necessary to surround the mold with a slip-box which heretofore has been very cumbersome and expensive, often requiring considerable capital for their purchase and maintenance and necessitating an unnecessary amount of labor in maintenance. To overcome these objections is the particular object of my present invention.

One manner for the construction of my invention and that which in practice has been found the most desirable, combining all the necessary requisites, is shown most clearly in the accompanyingdrawings, in which Figure 1 is a perspective view of my invention com lete and disassociated from the sand-mol with which it is to be employed. Fig. 2 is a plan view of my invention shown as surrounding a sand-mold, that is to say, in operative position. Fig. 3 is a detail crosssection of the lappingcorner of the device. Fig. 4 is a detail cross-section of the reinforced corner of the device. And Fig. 5 is a detail section showing a modified form for the flanges of the device.

Similar indices denote like parts throughout the several views of the drawings.

In order that the invention may be more fully understood I will now take up a detail description thereof in which I will describe the several parts as briefly and as compactly as I may.

In the drawings the letter A denotes a sand-mold surrounded by my invention.

My device proper is composed of a single Ordinarily the sides 1 and 2 are formed parallel with each other, as are also the ends 3 and 1 parallel with each other and at right angles to the sides. Generally the sides and ends are formed absolutely vertical, but in some instances I form them somewhat tapering inward, convergently, usually at an inclination of about one-eighth of an inch, to one inch of height. A flange is turned out around both edges of the box at right-angles to the sides and ends, substantially as indicated. These flanges serve a double purpose: to stiffen and support the sides and ends; and to form hand-holds for manipulating the box. It is manifest that the box so formed is reversible and invertible,-can be changed end-for-end, or used either edge up.

The angular corners 5 and 6 are formed as they are to brace and stiflen the box, but more particularly in order to flt the mold of sand, as the molds are usually formed with two truncated corners, caused by the construction of the flask in which they are formed. The corner 7 may be reinforced by an angle-strip 10 lap ing around the corner on the outside of the box, and secured thereto by a plurality of rivets as shown. If desired I reinforce the outer edges of the flanges by turning them around a rod 12, as shown in Fig. 5, this rod should be formed endless and extends entirely around the box, one being employed in upper and one in the lower flanges. After the sand mold has been formed by the flask then the flask is removed, after which my slip-box'is inserted around the mold, as in Fig. 2, to hold the mold during the process of molding therein.

My device being formed entirely of metal it is ap arent that the box will not be burned, as in tile case of a wooden box, thereby providing a sli box which will be practically indestructib e.

Having now fully shown and described my invention and its construction, and the best means for its 0 eration to me known at this time, What I c aim and desire to secure by Letters Patent of the United States, is-

A sheetmetal slip-box for forming sandmolds, the combination of the sides and ends formed inte ral With each other with two of the oppositely disposed corners formed angular, the single piece of material of which said parts are formed being overlapped at one of the right angular corners and riveted, a reinforcing angular strip riveted on the outside around the other right angular corner, flanges projecting out at right angles from both edges of the box and extending entirely therearound and formed integral therewith, and

R. W. HANDLE, R. E. RANDLE. 

